רב אחא קרטיגנאה

Rab Achah of Kartigena, and some say Rab Chana of Kartigena, related a matter that came before Rabbi Yochanan ben Zakkai. [In Bava Kamma (114b) and Ketubot (27b), it is Rabbi Chanan of Kartigena who relates it, etc.

However, in Berachot (33a), it is referred to as Karichinai, and he said to Rabbi Eliezer. (See above regarding Rabbi Abba and Rabbi Ada and Chana)].